Lock construction.



H. G. VOIGHT.

LOCK CONSTRUCTION.

I APPLICATION FILED APR. 17, 1913.y 1,093,809. Patented Apr. 21, 1914 2 SHEETS-SHEET 1.

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H. G. VOIGHT.

LOCK CONSTRUCTION.

ArPLIoATIoN FILED APR. 17, 191s.

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Patented Apr. 21, 1914 2 SHEETS-SHEET 2.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT.

LOCK CONSTRUCTION.

Specification of Letters Patent.

Patented Apr. 21, 1914.

Application led April 17, 1913. Serial No. 761,759.

To all whom 'it f/mzy/ concern Be it known that I, HENRY G. Voicirr, a citizen of the United States, residing at New lritain, county ot Hartford, State ot (.lonnccticut, have invented certain new and useful Improvements in Lock Construction, of which the following is a full, clear, and exact description.

iiiis invention relates to lock construction, and is designed to afford a lock structure embodying an electrical circuitmaking and breaking device operable by a certain key'on projecting or retracting a bolt, this making and breaking device serving to operate a suitable electric signaling or annunciating device, and indicating the time when the bolt has been projected or reti'acted.

The present invention involves a structure' especially adapted for use in connection with locks of the bitted key type. ln my copending application, Serial No. 762213 I have shown a construction especially adapted to locks of the cylinder type, and in which the broad principle of structure and operation herein disclosed is set forth and claimed.

A practical application of my invention may be seen in the case of the corridor door locks of hotels. It may be desirable, for instance, to keep a record of the t-ime spent by employees, such as the maids, in attending to their duties in connection with the different rooms, and by the present invention means are provided wherein, in a lock of the bitted key type, one particular key, as the inaids key, operates a circuit making and breaking device coincidently with the project-ion or retraction of the bolt. This making and breaking of the electric circuit serves to operate a signal, as for instance, an annunciator drop, whereby the person in charge may know that the maid having charge ot that particular room has retracted the bolt and has entered the room, and later has lett the room and projected the bolt, the time elapsing between operation ot a. signal Aby the making and breaking of the circuit indicating the length of time spent in that particular room.

A preferable embodiment of the signal controlling means is illustrated in the accompanying drawings forming part of the following detailed speciication, and illustrating a preferable embodiment ot the in-A vention 1n connection with a hotel corridor j door lock `of a standard bitted key type.

Tn these drawings: Figure 1 is a view in elevation ot a corridoi' lock of standard type embodying the subject matter ot the present invention, the circuit making and breaking device carried thereby being shown with the parts in circuit broken position, and the electric connections thereto being shown dagrammatically. Fig. 2 is a :fragmentary vertical sectional view of the lock case shown in Fig. l. Fig. 3 is a view in elevation of the. interior of a lock case showing the bolt retracted by the maids key a nd the circuit making and breaking device with its parts in circuit closed position. Fig. 4L is a view in side and end elevation of the dead bolt of the lock mechanism in conjunction with which the circuit. making and breaking device is operated. Fig. is a view in side and end elevation of a special tumbler coperating with said dead bolt and arranged to operate the circuit making and breaking device. Fig'. 6 is a view in elevation of the bitted end et one ot a plurality ot keys which may be used to operate the dead bolt, this key being a short key. Fig. 7 is a view in elevation of the bitted end of a long key which may be used to operate the special tumbler and through it the circuit making and breaking device.

The standard type of bitted key lock in connection with which the present invention is shown` comprises a lock case l with its :face plate Q., and with its dead bolts 3 and fl. The dead bolt 3 is suitably guided in the lock case and is provided with the tumbler mechanism 5 gated as usual and cooperating with fence 6 ot its dead bolt in the usual manner. This dead bolt is designed to be operated from the interior of the door, the interior key hole being indicated at T The upper dead bolt et is designed to be operated from the exterior of the door, as by a plurality of keys such as a guest key S bittedV to operate a series oitl pivoted tumblers 9 cooperating with and controlling the dead bolt in the usual manner, but not bitted to extend tar enough in to operate a special or emergency controlling member 'l0 pivotally mounted in the lock case and cooperating with the dead bolt and located in the rear of and in alinement with the series oli' tulnblers t), The recess in the lock case for the stump of these keys is shown at 11. All ot' these tumblers 9 are gated to cooperate with the felice 12 of their dead bolt l, as usual. '.ihis special controlling member l0, however, is operable by a particular key, such as a maids key 13, shown in llig. T, which key is given a longer hitting or has one end of its bit-ted edge longitudinally extended relative to the bitted edges of the other keys as at 3a, this extension being removed from the longitudinal axis of the key and being positioned to engage the lower edge of this special member 10, and to lift said member with the projection and retraction of said dead bolt l. When the dead bolt is retracted by the key 13, the member 10 will be raised as shown in Fig. 3, and will be held by the fence of said bolt in raised position until the dead bolt is again projected through the key 13. The upper and lower dead bolts i and 8 respectively, are loosely connected, as usual, by the pivoted link 141-, and their tumblers are also connected by the usual sliding plate 15. The lower dead bolt 3 may be projected independently of the upper dead bolt from the interior, but may bc retracted from the exterior by means of a certain key which will operate the connecting plate 15. The specilic features of construction of this lock mechanism par se, form no part of the present invention, and need not be further described in detail as it merely forms a lock construction of the bitted key type which is well known to those skilled in the art l have only attempted to so far describe its operation as to make clear the operation of the circuit making and breaking dev'cc designed to operate in conjunction therewith.

l. have heretofore described the operation of the-special controllingmember 10 through the extension bitting 18a of the long or maids key 13. The operation of this special member controls the circuit controlling con nections as follows: At the upper portion of the lock case above the dead bolt l and above the member 10, two spring pressed contact lingers 1G are provided, these tingers being pivoted to the lock case and being provided with binding screws 17 to which the ends of wires 18 are connected and from which these wires lead to an ap prepriate electric signaling or annunciating device 19, connection between the door and said device being preferably through a door hinge or door hinges, as described in my copending application hereinbefore referr-ed to. A stop pin 2O is employed to position the upper contact linger 16, so that it remains substantially stationary relative to the lower linger 16, which lower linger is provided with a contact button 21. The

spring of this lower contact linger normally tends to throw it away .from the upper contact linger, so that the construction provides means normally tending to maintain the circuit broken. rThe member 10 has secured to its upper edge a lifting arm 22 positioned beneath the lower contact linger 1G, and against which arm said linger is held by its spring. Both spring lingers 1G are, of course, insulated from the lock case and other parts of the lock mechanism, including the lifting arm 22,

Assuming that the corridor door upon which such a lock is mounted has been closed and locked from the exterior by the guest; when the maid retracts the bolt to enter the room, her key 13 through its extension bitting 13, will lift the usual controlling tumblers 9 and the special controlling member 10 for the circuit make and break device` and will retract the dead bolt f1, the lifting movement of the member 10 moving the lower contact linger 10 to bring its contact button 21 from the position shown in Fig. 1, to the circuit making position shown in Fig. 3. The retraction of the bolt will bring its fence 1Q beneath the gate of thc member 10 and will hold said men'iber raised and in circuit making` position until the dead bolt is again projected through the maids key, whereupon said meml'ier will drop down to the position shown in Fig. l, the spring of the lower linger 1G throwing it downwardly to retract its contact button Q1 from engagement with the upper contact linger 1G thereby breaking vthe circuit. The making and breaking of the circuitv through the means described will indicate to the person in charge of the maids through the electric signaling device or annunciator the times at which the maid has entered and left the room, the elapsed time indicating the time spent by the maid in attending to the particular room designated, for instancev` by a specie annunciator drop.

Vlhile l have herein described and shown a particular arrangement of key controlling circuit making and breaking device, l desire it. understood that the same is susceptible oli' structural variation and relative arrangement of parts within the spirit of the invention and the scope of the appended claims. It will also be obvious that the invention is not limited to the use of any specilic form olf lock mechanism although especially adapted to locks of the bitted key type.

lVhat I claim, therefore, and desire to cure by Letters Patent is v 1. In a lock, a locking mechanism in cf mbination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking device' associated with the lock, said locking mechanism including a bolt and a plurality of locking tumblers therefor, said bolt and tumblers being arranged to be operated by a plurality ot keys having ditlerently bitted edges otl'set from the longitudinal axis ot the k ay, said keys including a certain key having one end longitudinally extended relative to the rest and ott'set from the longitudinal axis et the key, and movable controlling means in operative relation to said making and breaking device and positioned tor engagement and` actuation by the extended end ot said certain key upon boltactuating mevemeiit thereof.

2. In a lock, a locking mechanism in combination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking device associated with the lock, said locking mechanism including a bolt and a plurality oit locking tumblers therefor, said bolt and tumblers being arranged to be operated by a plurality of keys having ditlerently bitted edges offset from the longitudinal axis et the key, said keys including a certain key having one end longitudinally extended relative to the rest and offset trom the longitudinal axis ot the key, and movable controlling means in operative relation to said making and breaking device and positioned adjacent te said tumblers and bolt and adapted for engagement and actuation by the extended end ot said certain key upon bolt act-uating movement thereof.

3. ln a lock, a locking mechanism in combination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking dwice assoeiated with the lock, said locking mechanism including a bolt and a plurality of locking tumblers therefor, said bolt and tumblers being arranged to be operated by a plurality of keys having differently bitted odset from the longitudinal axis oit the key, said keys including a certain key having one end longitudinally extended relative to the rest and' otlfset from the longitudinal axis of the key, movable controlling means in operative relation to said make and break device and having at least two circuit controlling posi` tions relative thereto, said means being positioned Jr'or engagement and actuation by the extended end ot said certain key upon bolt actuating movement thereof, and means associated with the locking mechanism and cooperating with said controller to hold the same in said two circuit controlling positions when actuated to said positions through said certain key.

1n a lock, a locking mechanism in com bination with an electric sigiialing mecha nism, said signaling mechanism including a circuit making and breaking device associated with the lock, said locking mechanism incl ding a bolt and a plurality ot locking tumbler-s tlieretor,said bolt and tumbler-s being arranged to be operated by a plu lality of keys having ditlerently bitted edges oi'liet trom the longitudinal axis of the key, said keys including a certain key having one end longitudinally extemled relative to the rest and oiiset 'trom the longitudinal axis et the key, movable controlling means in operative relation to said make and break deiiice and having at least two circuit controlling sitio-ns relative thereto, said means beingpositioned for engagement and actuation by the extended end et said certain key upon bolt actuating movement thereof, and mean.1 associated with said boltand cooperatingI with said controller to hold the latter in one circuit controlling position upon movement of said controller and oit said bolt through the cooperative actuation ot said certaiin key in one direction.

5. ln a lock, a locking mechanism in combination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking device associated with the lock, said locking mechanism including a bolt and a plurality ot locking tumblers therefor, said bolt and tumblers being arranged to be operated by a plurality ot keys having diiterently bitted edges o tliset trom the longitudinal axis of the key, said keys including a certain key having one end longitudinally extended relative to the rest and otitset from the longitudinal axis oit the key, and a movable controlling member tor said make and break device having at least tivo circuit controlling positions relative thereto, said controlling member being positioned for operation through the extended end ot said certain key upon the operation et said key to actuate said belt, and means associated with said lock and operable upon actuation of said bolt in one direction by said certain key to hold said controlling means in one circuit controlling position until said bolt is actuated in the reverse direction by said certain key.

G. In a lock, a locking mechanism in combination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking device associated wit i the lock, said locking mechanism including a bolt and a plurality ot locking tumblers therefor, said bolt and tumblers being arranged to be operated by a plurality of keys having differently bitted edges otltset from the longitudinal axis ot the key, said keys including a certain key having one end longitudinally extended relative to the rest and ott'set from the longitudinal axis oit the key, and a movable controlling member for said make and break device having at least two circuit controlling positions relative thereto, said controlling .iember being positioned adjacent said bolt and tumblers and cooperating with said bolt and with the extended end of said certain key whereby when said bolt is retracted through said certain key, said member is moved to and held in one circuit controlling position until said bolt is projected through said key, whereby said member is moved te another circuit controlling position.

'2'. in a lock, a locking mechanism in cembination with an electric signaling mechanism, said signaling mechanism including a circuit making and breaking device associated with the lock, said locking mechanism including a dead bolt and a plurality el piveted locking tumblers therefor, said bolt and tmnblers being arranged to be operated by a plurality of keys having differently bitted edges oli'set from the longitudinal axis et' the key, said keys including a certain key having one end longitudinally extended relative to the rest and offsetirom the longitudinal axis oi the key, a piveted controlling member for said make and break device having at least two circuit controlling positions relative thereto, said member being positioned adjacent said bolt and tnmblers and cooperating with the longitudinally extended end of said certain key, said bolt being provided with a tencev and said controlling member being gated to cooperate therewith upon the actuation oit' said bolt in one direction by said certain key whereby said controlling member is maintained in one circuit controlling position until said bolt is actuated in the reverse direction by said certain key.

8. In a leek, a locking mechanism in combination with an electric signaling mechanism, said signaling mechanism including` a circuitmaking and breaking device associated with the lock, said locking mechanism including a belt having a locking tumbler arranged to be operated through a plurality ot keys having dijllierently bitted edges olliset from the longitudinal axis oit the key, one of said keys having one end longitudinally extended relative to the rest and ollset lrom its longitudinal axis, a controlling member movably mounted adiacent said tumbler and arranged to be operated through said key having the longitudinal end extension, said controlling member having at least two circuit controlling positions, means et operative connection between the eoi'itrelling member and said circuit making and breaking device, with means associated'with the lock tor holding the controlling member in a position to cont-rol the circuit in one way when the bolt of the lock has been re tracted by the key having the longitlulimxl end extension.

HENRY Gr. VOIGNT.

Witnesses Gwnxnemnu A. JACKSON, Unas. RUSSELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

